]> NEBC barcode-00549187 United States of America Massachusetts Boston Basin Ecoregion: Mystic River Watershed. Middlesex Fells Reservation, north end of Spot Pond, parking lot Dysphania ambrosioides (Linnaeus) Mosyakin & Clemants (Linnaeus) Mosyakin & Clemants 2015-04-10 08:59:33 B. T. Hamlin